Power-unit assembly



arch 25 1924. 1,488,23l

' E. B. cusHMAN POWER UNIT ASSEMBLY Filed Aug. ll 2 Sheets-Sheet 1 3 n. va u to@ www;

Gtfornui March z5, 1924. 1,488,231

E. BY CUSHMAN POWER UNIT AS SEMBLY &3 Filed Aug. 11 1923 2 Sheets-Sheet 2 ,i2/www?, www

@g1/fw Patented Mar. 25, 1924.

Evnnmsi B. cUsHMAN, or LANSING, cnIeAN, AssIoNon 'ro BEAN SPRAY PUMP co., or SAN JosE, CALIFORNIA, A coaro'rIoN or CALIFORNIA.

POWER-'UN IT ASSEMBLY.

Appucauonmea August 11, 192s. serial N6. 656,952.

ing at Lansing, in the county of In ham and State of Michigan, have invente certain new and useful Improvements in Power-Unit Assemblies, of which the following is a specification. 4

This invention relates to internal combustion engines'and especially an engine, radiator, water pump, and fly wheel assembl It is the object of the invention to provi e an assembly compactly arranged. The pump and fly wheel are mounted directly on the crank shaft and the radiator is concentric to the crank shaft. This arrangement pro tects the radiator, saves space, eliminates an extra pump shaft or the lengthening of the magneto shaft, and eliminates unnecessa parts and accessories at the side of the engine.

Another invention involved in this application and which is ancillary to the arrangement'of the parts above referred to, is the pump construction itself. This pump is provided with a pair of packing glands and a runner, so arranged that the ad'ustment of one packing gland at the outsi e serves to adjust both packing rings. This makes possible the use of a pump concealed between the fly wheel and the radiator. When necessary to reach the pumpone has simply to remove the y wheel which exposes the entire side of the pump so that it can then be quickly disengaged from the radiator headers. These and other features will be explained more in detail hereinafter.

In the drawings:A

Fig. 1 is a side elevation of asingle cylinder engine equipped with my improved assembly.

Fig. 2 is an elevation of the centrifugal Pump' Fig. 3 1s a cross sectlon of the same taken on the line 3 3 of Fig. 2.

Fig. 4 is a fragmentary elevation of the y wheel which is broken away to show a front elevation of the radiator and pump.

The cylinder block is designated a and here embraces a single cylinder engine, but obviously the number of cylinders is imma'- terial. The other accessories such as the carburetor b, spark plug c, oil cup d, magneto'e, intake manifold f, and exhaust pipe g, are al1 apparent from the drawings. The

extension of the crank case designated h is bolted to the angle-section ring z' which.' forms the center of the cooling radiator j.' The water is drawn through the hose con-f nection from the engine water jacket directly through the top header m of the radiator, through the hose connection n and suitable fittings, to the centrifugal pump o. This pump comprises a pump casing p, a cover g, bolted to the casings, a runner or rotor r, provided with a long integral hub 8, keyed to the crank shaft t. The pump casing p is a castin ward y projecting s eeve u which forms a bearing for the hub of the rotor. The outer end of the sleeve projects outwardly from the body of the casing forming an abutment fv having a tapered or conical seat w, which in connection with the parts to be described, acts as a packing gland. The cover plate g 1s provided with an inwardly projecting sleeve screw threaded to take the packing gland y that screws into it. The hub of the runner is thickened near the center to pro vide a journal for the runner in the bearings and u and for the further pu ose of transmitting the pressure applied y the gland y to the packing a. This pressure is transmitted by the center of the hub from the packing a to the packing 1 on the op osite side of the pump. This packing 1, e-

.ing forced against the tapered seat w that forms the opposite gland, serves to crowd the packing tlghtly against the hub of the runner and the bearings, thereby tightening the packing on both sides of the pump simultaneously.

This is a very useful andnecessary feature in connection with the location of the pump on the crank shaft, and between the fly wheel and the motor, for withy the one side of the pump directlyup against the motor it will be seen that it would be impossible to have access to this side of the pump to adjust the packing on this side of the pump.

rThe packing gland y is provided with an integral arm 2 which may be engaged by a tool inserted through one of the apertures 3 in the web of the y wheel. When the tool has been butted up a ainst this arm, the fly wheel and tool may e turned in either direction to tighten or loosen the gland provided the set screw 4 be loosened. This may be loosened by a screw. driver inserted through the air openings in Lthe periphery provided with an in- Y of the Hy wheel. It will be noticed the fly wheel is an integral casting provided with varies 6 -so that air is drawn 1n through the periphery 'of the Hywheel and discharged against the face of the rotor and the waterl i' pump.

The arrangement that I have described makes a very neat, compact, and convenient assembly for a stationary engine. It will be noticed that the Hy wheel, radiator and pump, are all concentric lto the crank shaft. The radiator is bolted directly to the crank case .by means of its central rin The pump is supported on the crank sha t, and by the connectionsv with the radiator. The Hy wheel, of course, is supported directly on the crank shaft. B removing the nut 6 the Hy wheel may e taken oil" the crank shaft and the face of the pump is exposed directly at the end of the engine so that the pump may be easy of access and the radiator 1s also exposed and may be easily removed after first removing the pump.

I have here shown the pump as a centrifugal pump, but obviously it may be any other form of rotary pump. In this centrifugal ump the water is drawn directly through t e upper head of the rotor, through the hose connection n, into the central Yannular chamber 7 of the pump'. It is then drawn into the central chamber 8 of the runner or rotor, and thrown out the periphery of the rotor through the passages 9 into the chamber 10. lt is then forced through the connections 11 into the bottom header 12 of the radiator, and thence led through the radiator to the top header thence it returns to the engine through the tubular connections 13.

What ll claim is:

1. The combination of a water jacketed engine provided with a crank shaft extended at one end, a radiator provided with upper and lower headers and concentric with the extended crank shaft, a water pum having a rotating member mounted on t e crank shaft, a conduit leading from the water jacket throughthe top of the radiator to the pump, a conduit leading from the pump to the lower header of the radiator, and a conduit leading from the u per header of the Y radiator to the water jac et.

2. The combination of a water jacketed engine provided with a crank shaft extending outwardly beyond the engine bearing, a

radiator concentric with the crank shaft, a pump provided with packing and havin a rotating1 member mounted on such exten ed crank aft, and means operable at one side of the ump for simultaneously adjustingthe pac 'ng at both sides of the pump.

3. The combination of a water jacketed engine provided with a crank shaft extending outwardly atA one end, a radiator mounted concentrically to such extended crank shaft, a pump provided with packing and having a rotating membermounted on such` extended crank shaft, a Hy wheel mounted on and near the end of the extended crank shaft, and means accessible from the outside of the Hy wheel for adjusting the packing in the pump.

4.-. The combination of a water jacketed engine havin at Aone side an outwardl extendedfcran shaft, a pump provided with packing and mounted concentric to the outwardly extended crank shaftand having a rotating member mounted thereon, and a gland on the outside of the ump for simul- \taneously adjusting the packing at both sides the opposite side of the pump by means of the said tapered seat rotor. t l.

6. The combination of a water jacketed engine provided at one end with an outwardly extending crank shaft, a radiator fastened to the engine and concentric with the crank shaft, a centrifugal pump provided with packing and with suitable connections through the radiator to the water jacketed engine, the said pump being providedwith a runner mounted directly on the crank shaft, a Hy wheel near the end of the extended portion of the crank shaft, and means accessible thro-ugh the Hy wheel to adjust the packing at both sides of the pump.

7. The combination of a water jacketed engine provided at one end with an outwardly extending crank shaft, a radiator' mounted concentrically to the crankshaft, a rotary pump packed at both sides and concentric to the crank shaft and rovided with a runner mounted directly on t e crank shaft', connections from the pump through the radiator to the water jacketed engine', a Hy wheel mounted near the end of the crank. shaft, and means accessible through the Hy wheel for shifting the runner longitudinally of the shaft to adjust the packing on both sides of the pump.

8. The combination of a water jacketed and the shifting of the engine provided at one end with an out- V incensi gland adjustable from the outside of. the pump for shiftin the runner longitudinally of the crank sha to simultaneously adjust the packing on both sides of the pump in connection with the tapered abutment.

9. The combination of a Water jacketed gine provided at one end with an outwardly projecting crank shaft, a water ump having a casing mounted concentricaly to the crank shaft, the said pump being provided with a runner mounted directl on the crank shaft and packing at both sides thereof, the said runner having a hub witha thickened portion at the center to form an abutment, and the said pump casing provided at one side with an abutment having a tapered seat, and a packing gland on the outside of the pump in the Jform of a nut with a tapered inner end for engaging the packing at one side and for simultaneously adjusting the packing at the opposite side of the pum throughthe shifting of th-e runner longitudinally of the crank shaft.

10. The combination of a water jacketed -engine provided at one end with an outwardly extending crank shaft, a radiator, a pump mounted concentrically with the outwardly extending crank shaft, and having packing at both sides, said pump having a runner mounted directly on the crank shaft, a fly wheel mounted on the end of the crank shaft and having an aperture through its web and a packing gland accessible through said aperture for simultaneously adjust the packing on both sides of the pump.

11. The combination of a water jacketed ee provided at one end with an outwardly extending crank shaft, a radiator, a pump provided with packing on sides mounted concentrically to the outwardly extended crank shaft, suitable water connections between the pump, radiator and water jacket of the engine, a gland on the outside of the pump, a ly wheel mounted near the end of the crank shaft and having an aperture to give access to the said gland, the turning of which serves to adjust the packy ing on both sides of the pump simultaneously.

12. The combination of a water jacketed engine provided at one end with an outwardly extended crank shaft, a radiator supported around the shaft, a water pump provided with suitable connections with the radiator and the water jacket of the e 'ne and having a rotating member mounte on the crank shaft, and a fly Wheel near the center of which the pump is located, said fly wheel being supported on the crank shaft outside the radiator and pump, and the pump being located between the fly wheel and the radiator.

13. The combination of a water jacketed engine provided at one end with an outwardly extending crank shaft, a pump having a rotating portion secured on said extension of the crank shaft and a fly wheel secured on the end of the crank shaft and having a portion of its center cut away to permit the location of the pump within the iy wheel.

In testimony whereof I ax my signature. 

